 | Sosie Bacon als Dr. Rose Cotter |
 | Kyle Gallner als Joel |
 | Caitlin Stasey als Laura Weaver |
 | Jessie T. Usher als Trevor |
 | Kal Penn als Dr. Morgan Desai |
 | Rob Morgan als Robert Talley |
 | Robin Weigert als Dr. Madeline Northcott |
 | Judy Reyes als Victoria Munoz |
 | Gillian Zinser als Holly |
 | Jack Sochet als Carl Renken |
 | Meghan Brown Pratt als 10 year old Rose |
 | Nick Arapoglou als Greg |
 | Jared Johnston als Orderly Dan |
 | Shevy Gutierrez als Officer Wilkes |
 | Ura Yoana Sánchez als Nurse Wanda |
| Scot Teller als Prison Guard |
| Dora Kiss als Mom Cotter |
| Michelle Persiano als Nurse |
 | Setty Brosevelt als Driver / Pedestrian |
| Jerry Lobrow als Cocktail Party Guest |
| Brandon Brigman als Security guard |
 | Vanessa Cozart als Nurse |
 | Sara Kapner als Stephanie |
| Perry Strong als Detective Buckley |
| Nadia Ramdass als Nurse |
 | Matthew Lamb als Jackson |
| Shu Q als Officer Chan |
| Athena Smiley als Little girl |
| Rachel Yong als Brash Colleague |
| Asia Hernandez als Yvonne |
| Ilene Blackman als Nurse |
| Steven Bullock als Cocktail party guests |
| Felix Melendez Jr. als Gabriel Munoz |
 | Kevin Keppy als Nightmare Mom |
 | Marti Matulis als The Monstruosity |
| Steven Strickland als Deputy Sheriff |
| Parker Finn | Director |
| Parker Finn | Writer |
| Marty Bowen | Producer |
| Wyck Godfrey | Producer |
| Isaac Klausner | Producer |
| Robert Salerno | Producer |
| Elliot Greenberg | Editor |
| Monika Mikkelsen | Casting |
| Lester Cohen | Production Design |
| Larry W. Brown | Art Direction |
| Sheila Bock | Set Decoration |
| Alexis Forte | Costume Design |
| Sasha Grossman | Makeup Department Head |
| Mike Rotella | Sculptor |
| Brian Spears | Special Effects Makeup Artist |
| Jeremy Selenfriend | Special Effects Key Makeup Artist |
| Tom Woodruff Jr. | Makeup Designer |
| Cristóbal Tapia de Veer | Original Music Composer |
| Charlie Sarroff | Director of Photography |
| Adam Fishbach | Executive Producer |
| Dan Kenyon | Sound Designer |
| Tom Ozanich | Sound Re-Recording Mixer |
| Matt Telsey | Sound Effects Editor |
| Christina Grant | Makeup Artist |
| Deirdre Brennan | Set Decoration Buyer |
| Jeremy W. Foil | Assistant Art Director |
| Ryan Palmer | Assistant Art Director |
| Sean Findley | Visual Effects Producer |
| Yuval Levy | Visual Effects Supervisor |
| Vico Sharabani | Visual Effects Supervisor |
| Kelsey Sasportas | Costume Supervisor |
| Dierdre Harris | Hair Department Head |
| Kim Shriver | Hairstylist |
| Tony Phillippe | First Assistant Director |
| Stéphane St-Hilaire | Second Second Assistant Director |
| Felix Andrew | Production Sound Mixer |
| Davi Aquino | Foley Editor |
| Chelsea Body | Foley Mixer |
| Judah Getz | ADR Mixer |
| Steve Hammond | Foley Artist |
| Bill Higley | ADR Mixer |
| Kevin Jung | Foley Editor |
| Goro Koyama | Foley Artist |
| Bob Lacivita | ADR Mixer |
| Christopher J. Leone | Utility Sound |
| Andy Malcolm | Foley Artist |
| Maria Teresa Murillo | Dialogue Editor |
| Kevin Schultz | Foley Mixer |
| Tami Treadwell | ADR Mixer |
| Will Englehardt | Special Effects Technician |
| Eugene Hitt | Special Effects Coordinator |
| Mike Burke | Stunts |
| Nancy Cantine | Stunts |
| Neimah Djourabchi | Stunts |
| Mark Fichera | Stunt Coordinator |
| Alesha Forche | Stunt Double |
| Warren E. Hull | Stunts |
| Luke Lesko | Stunts |
| Abby Nelson | Stunts |
| Josiah Nolan | Stunts |
| Kevin Rogers | Stunts |
| Derrick Simmons | Stunts |
| Turner Smith | Stunts |
| Kyli Zion | Stunts |
| Christopher Place | Stunt Coordinator |
| Thomas Place | Stunt Coordinator |
| Deborah Brozina | Camera Operator |
| Glenn Fishel | Grip |
| Kenneth Fundus | Grip |
| John Halligan | Grip |
| Michael Hauer | Steadicam Operator |
| Corey Jacobs | Grip |
| Omar King | Grip |
| Loren Malo | Grip |
| Holli Porreca | Grip |
| Journey Brown-Saintel | Casting Assistant |
| Diane Heery | Extras Casting |
| Caitlin D. Jones | Casting Associate |
| Jason Loftus | Extras Casting |
| Arianna Trames | ADR Voice Casting |
